CN107172713B - Wireless resource allocation/management method/system, readable storage medium, device - Google Patents
Wireless resource allocation/management method/system, readable storage medium, device Download PDFInfo
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Abstract
The invention provides a wireless resource allocation/management method/system, a readable storage medium and a terminal, wherein the allocation method comprises the following steps: measuring the current load condition of the wireless access point, reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving and counting the transmission requirement of user equipment when the user equipment associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network; after receiving the connection permission control signaling fed back by the core network, screening the established associated user equipment according to the access control signaling; and performing wireless resource allocation according to the wireless resource allocation strategy sent by the core network. The invention can realize the support of QoS in the heterogeneous network and clear the obstacles in the fusion process of the heterogeneous network.
Description
Technical Field
The present invention relates to a method and system for allocating/managing radio resources, and more particularly, to a method and system for allocating/managing radio resources, a readable storage medium, and a device, which belong to the field of wireless communication networks.
Background
The development trend of the future heterogeneous wireless network is mainly based on a hybrid access mode of a cellular network and a wireless local Area network, and an overlapping coverage network system is formed by the access modes of different modes such as a satellite network, a WPAN (wireless Personal Area network), an Internet of vehicles and the like, so that ubiquitous full-coverage heterogeneous wireless access service is provided for users. Research on a heterogeneous wireless network convergence mode and an interconnection mode has already achieved a staged result, and various possible solutions are proposed by a standardization organization. ETSI originally proposed a convergence architecture for 3G and wlan (wireless Local area network), and although the design only considered the case of convergence and cooperation of the two systems, the convergence architecture and idea are also suitable for other access methods.
With the development of wireless communication technology and mobile communication technology, the convergence of 5G cellular network and heterogeneous wireless network architecture is becoming more and more popular. The cellular network has the advantages of wide coverage range, supporting high mobility of users, and the telecommunication network ensures that the data bandwidth is limited, thereby being very good for providing voice service and medium-low speed data service. The network has the advantages of large transmission bandwidth and high data rate, but has a small coverage area, and can provide effective supplement for the cellular network in hot spots. And the heterogeneous network fully combines the complementary advantages of the two access modes, and a wide-coverage, high-mobility and high-capacity wireless communication system is realized. Meanwhile, as the technology of the multi-mode terminal gradually develops and matures, the existing multi-mode mobile terminal generally supports cellular and two different access modes, and the same user can freely select to serve the network according to the difference of the current service types.
The future wireless communication network architecture will be a complex architecture with various heterogeneous networks (e.g. 5G, WLAN, WPAN, etc.) coexisting, cooperating and continuously converging. The characteristics of these heterogeneous networks vary in terms of coverage area, bandwidth, reliability, cost, security, and so on. In the future they will meet the needs of the end user in a complementary way. The development of multi-mode terminal technology makes it possible to concurrently transmit data using a plurality of heterogeneous networks. The multi-connection parallel transmission technology of the heterogeneous network can fully utilize network resources and meet the requirements of future communication services.
Although the multi-connection parallel transmission of the heterogeneous wireless network can improve the reliability, the throughput and the resource utilization rate of the system. However, some problems still exist in the multi-connection parallel transmission of the heterogeneous wireless network, for example, in a scenario where 5G and WLAN are merged, since the access of the wireless local area network adopts a CSMA/ca (carrier Sense Multiple access with connectivity availability) mechanism, only best effort service can be provided, and QoS (Quality of service) guarantee cannot be provided. When real-time services such as voice, real-time video, etc. are switched from the cellular mobile network to the WLAN network, QoS cannot be guaranteed. This hinders the convergence process of heterogeneous networks. In order to improve the quality of service assurance of CSMA/CA, the following mechanisms are proposed in the related documents, respectively.
The VMAC-VS mechanism proposed by the University of Columbia (Columbia University) in the united states is composed of a distributed method capable of supporting differentiated services, channel monitoring and admission control. The VMAC-VS mechanism proposes a differentiation mechanism called back-off timer differentiation. In fact, the differentiating mechanism is to use different minimum Contention Windows (CW) for traffic flows of different prioritiesmin) It can support at least two levels, high priority service and best effort service. Based on the idea that for two wireless nodes with a back-off timer entering the back-off state at the same time, there is a smaller CWminThe node of the value may take a smaller CW value and thus is more likely to access the channel first. In addition, the VMAC-VS mechanism includes two evaluation algorithms, VMAC (virtual MAC) and VS (virtual Source), respectively. The VMAC algorithm is used primarily to passively monitor the wireless channel and assess locally available service levels. It evaluates the quality of service related statistical parameters on the MAC including delay, delay jitter, collision rate and packet drop rate, which reflect to some extent the condition of the radio channel. Whereas the VS algorithm utilizes the VMAC algorithm to estimate the quality of service of the application layer. It can adjust the parameters of the application layer, so that the parameters can be taken as values according to the virtual delay curve generated by the VMAC. If the VMAC and VS algorithms are combined with the admission control mechanism, that is, on the application layer, according to the service quality obtained by the VS algorithm, it can know how many services the current network situation can support and what level of service, so as to adopt admission measures for the new service to ensure the service quality in the current network. In this way, a very stable system state can be achieved.
The GAMA (group Allocation Multiple Access) protocol was proposed by Andrew Muir and J.J.Garcia-Lun a-aces at the university of California, san Cruz, USA, in order to provide QoS guarantees for real-time services in a distributed environment. Gamma takes full advantage of TDMA and CDMA, and divides the channel into a series of variable length periods, the length of which depends on network loading conditions. Each cycle consists of a contention phase and a non-contention phase called group transmission. The group transmission phase is subdivided into several node transmission processes, which correspond to a time Slot (Slot) in the synchronous network, but the GAMA/CA does not require the network to have a synchronization function. In the contention phase, a node having data to transmit joins the "transmission group" through an RTS-CTS session, and once it becomes a member of the transmission group, it can access the channel in the following group transmission phase without contention and collision, and it can maintain its membership as long as it has data to transmit. This mechanism allows nodes to allocate bandwidth in an organized manner. When the network is lightly loaded, gamma is very much like CSMA; when the network is heavily loaded and all nodes become members of the transmission group, gamma effectively becomes TDMA. It is noted, however, that unlike TDMA, gamma does not require the channel to be divided into time slots, nor does it require fixed-length frames. However, the GAMA mechanism also has certain disadvantages. Since at most one new node can access the channel and reserve bandwidth in one cycle, the average delay increases very fast when the network is heavily loaded. In addition, members in the transmission group joining early have a higher priority over members joining late in reserving bandwidth, so gamma is not a fair mechanism and does not give sufficient consideration to the global quality of service.
The DBASE (Distributed Bandwidth Allocation/Sharing/Extension) mechanism is proposed for supporting multimedia services of 802.11Ad Hoc wireless local area networks. DBASE enables each real-time node to establish and maintain a reservation table, and the table records the conditions of all real-time nodes successfully completing channel reservation, including the following information, such as access sequence, MAC layer address, service type and bandwidth required by the node. New real-time nodes compete to join the reservation table through the RTS frame, and then do not need to compete for the channel again every time of transmission. The mechanism comprises 4 parts, namely a bandwidth reservation process, a bandwidth allocation process, a sharing process and an expansion process. In summary, the DBASE protocol provides an idea that real-time nodes share their own information and grasp the overall condition of the network, so as to effectively decide their own behavior, but a contention window of the DBASE mechanism is between the PIFS and the DIFS, such a contention window (DIFS-PIFS) is too small and has no room for expansion and contraction, when a plurality of workstations compete for media at the same time, it is difficult to generate a winner, the result of continuous contention causes the contention period to be lengthened and much time is wasted, and in addition, due to its complexity, it is very difficult to implement.
The dwop (distributed Wireless Ordering protocol) mechanism is a distributed scheduling and media access algorithm proposed by Rice university in the united states. Its goal is to ensure that packets access the channel in the order dictated by the ideal scheduling model, which may be First-come-First-serve (FCFS), Virtual Clock (Virtual Clock), and early Deadline scheduling (early Deadline First). The key technology is to carry the priority of the data packet at the head of the queue in the 802.11 control frame, so that each node in the network knows the priority of the data packets of other nodes. Therefore, the priority of the data packet becomes global shared information, and each node can transmit data according to the priority order. For TCP traffic, DWOP can provide QoS differentiated services and better fairness. However, in the case of limited wireless bandwidth, the priority information of each node is transmitted over the network, which wastes a lot of bandwidth, and in the case of 10 TCP flows, the total throughput achieved by DWOP is only 3/5 of 802.11.
The development trend of the future heterogeneous wireless network is mainly based on a hybrid access mode of a cellular network and a wireless local area network, and assists in forming an overlapping coverage network system by different access modes of a satellite network, an internet of vehicles and the like, so that ubiquitous full-coverage heterogeneous access service is provided for users. However, as the access of the wireless local area network adopts a CSMA/CA mechanism, only best-effort services can be provided, and QoS guarantee cannot be provided, which hinders the convergence process of the heterogeneous network.
Therefore, how to provide a method/system for allocating/managing wireless resources, a readable storage medium, and a device, so as to solve the defects that in the prior art, since the access of the wireless local area network adopts the CSMA/CA mechanism, only best-effort services can be provided, QoS cannot be guaranteed, and the convergence process of the heterogeneous network is hindered, and the like, the method/system becomes a technical problem to be solved by practitioners in the art.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a method/system, a readable storage medium, and a device for allocating/managing radio resources, which are used to solve the problem in the prior art that, due to the CSMA/CA mechanism adopted for access of a wireless local area network, only best-effort services can be provided, QoS cannot be guaranteed, and a convergence process of a heterogeneous network is hindered.
To achieve the above and other related objects, an aspect of the present invention provides a radio resource allocation method applied to a communication network including a core network of a wireless cellular communication network, a wireless access point connected to the core network, and a user equipment communicatively connected to the wireless access point; the wireless resource allocation method comprises the following steps: measuring the current load condition of the wireless access point, reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving and counting the transmission requirement of user equipment when the user equipment associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network; after receiving the connection permission control signaling fed back by the core network, screening the established associated user equipment according to the access control signaling; and performing wireless resource allocation according to the wireless resource allocation strategy sent by the core network.
In an embodiment of the present invention, the access control signaling is used to inform the wireless access point of a user equipment allowed to perform service data interaction with the wireless access point and/or a user equipment prohibited from performing service data interaction with the wireless access point.
In an embodiment of the present invention, the step of performing a screening operation on the user equipment with the established association includes: performing service data interaction on the user equipment which is allowed to interact service data in the access control signaling; and rejecting the request of service data interaction for the user equipment which forbids service data interaction in the access control signaling.
In an embodiment of the present invention, the service data interaction includes service data transceiving between the wireless access point and the ue based on a carrier sense/collision avoidance scheme.
In an embodiment of the present invention, the step of allocating resources to the quality of service required by the user equipment in the coverage area of the wireless access point includes: in a wireless access point, establishing a sending queue for each user equipment; storing the data packets in different queues according to different destination addresses of the downlink data packets; when the wireless access point obtains the transmission opportunity through a carrier sense/collision avoidance mode, the data packet to be transmitted by the user equipment is extracted from a designated user queue according to a wireless resource allocation strategy issued by a core network and is transmitted.
In one embodiment of the present invention, for downlink transmission from the wireless access point to the ue in its coverage area, the data packets extracted from the user queue are transmitted; wherein, the extraction sequence of the data packets is carried out according to a wireless resource allocation strategy issued by a core network so as to ensure the service quality of different user equipment; for the uplink from the user equipment in the coverage area to the wireless access point, the wireless resource allocation of the uplink is realized through the wireless resource allocation of the downlink.
In an embodiment of the present invention, the transmission requirement of the ue includes a bandwidth required by a user and/or a delay.
In an embodiment of the present invention, the radio resource allocation includes an absolute bandwidth allocation and a relative bandwidth allocation, the absolute bandwidth allocation specifying a size of an allocated bandwidth; and after the relative bandwidth is allocated to the absolute bandwidth, the residual bandwidth is allocated among the user equipment in proportion.
The invention provides a wireless resource management method, which is applied to a core network comprising a wireless cellular communication network, a wireless access point connected to the core network and a user equipment in communication connection with the wireless access point; the radio resource management method comprises the following steps: receiving the current load state reported by the wireless access point and the transmission requirement of the user equipment which establishes association with the wireless access point; determining user equipment capable of performing service data interaction with the wireless access point according to the load state of the wireless access point and the transmission requirement of the user equipment, and sending an access control signaling to the wireless access point corresponding to the connection permission control signaling; and after the access control signaling is to be sent, formulating a wireless resource allocation strategy aiming at the wireless access point, and sending the wireless resource allocation strategy to the corresponding wireless access point.
The invention also provides a wireless resource allocation system, which is applied to a wireless cellular communication network comprising a core network of the wireless cellular communication network, a wireless access point connected to the core network and user equipment in communication connection with the wireless access point; the radio resource allocation system includes: the measuring module is used for measuring the current load condition of the wireless access point; the statistical module is used for counting the transmission requirements of the user equipment when the user equipment which is associated with the wireless access point has the transmission requirements; the first communication module is used for reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving the transmission requirement of the user equipment when the user equipment which is associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network; the screening operation module is used for screening the user equipment with the established association according to the access control signaling after receiving the access control signaling fed back by the core network; and the resource allocation module is used for allocating the wireless resources according to the wireless resource allocation strategy sent by the core network.
In an embodiment of the present invention, the access control signaling is used to inform the wireless access point of a user equipment allowed to perform service data interaction with the wireless access point and/or a user equipment prohibited from performing service data interaction with the wireless access point; the screening operation module is used for carrying out service data interaction on the user equipment which allows service data interaction in the connection allowing signaling; and rejecting the request of service data interaction of the user equipment which forbids service data interaction in the connection permission signaling.
In another aspect, the present invention further provides a radio resource management system, which is applied to a wireless cellular communication network including a core network of the wireless cellular communication network, a wireless access point connected to the core network, and a user equipment communicatively connected to the wireless access point; the radio resource management system includes: the second communication module is used for receiving the load state reported by the wireless access point and the transmission requirement of the user equipment which establishes association with the wireless access point; the access control module is used for determining user equipment capable of performing service data interaction with the wireless access point according to the load state of the wireless access point and the transmission requirement of the user equipment, and enabling the second communication module to send an access control signaling to the wireless access point corresponding to the connection permission control signaling; and the strategy making module is used for making a wireless resource allocation strategy aiming at the wireless access point after the access control signaling is to be sent, and sending the wireless resource allocation strategy to the corresponding wireless access point.
Yet another aspect of the present invention provides a storage medium having a computer program stored thereon, wherein the program is configured to implement the radio resource allocation method or the radio resource management method when executed by a processor.
A final aspect of the invention provides an apparatus comprising: a processor and a memory; the memory is configured to store a computer program and the processor is configured to execute the computer program stored by the memory to cause the apparatus to perform the radio resource allocation method.
As described above, the radio resource allocation method system, the radio resource management method/system, the storage medium, and the terminal according to the present invention have the following advantageous effects:
the wireless resource allocation method system, the wireless resource management method/system, the storage medium and the device of the invention design a signaling interface between the wireless access point and the cellular network based on the CSMA/CA mechanism, can realize the support of QoS in the wireless communication system, and clear the obstacles in the heterogeneous network fusion process.
Drawings
Fig. 1 is a schematic view of an application scenario of the present invention.
Fig. 2 is a flowchart illustrating a radio resource allocation method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a radio resource allocation queue according to the present invention.
Fig. 4 is a flowchart illustrating a radio resource management method according to an embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating an interaction principle of the radio resource allocation system and the radio resource management system according to an embodiment of the present invention.
Description of the element reference numerals
1 communication network
11 core network
121 base station
122 base station
123 base station
124 cellular base station
13 user equipment
51 radio resource allocation system
511 measurement module
512 first communication module
513 statistic module
514 screening operation module
515 resource allocation module
52 radio resource management system
521 second communication module
522 access control module
523 strategy making module
S21-S23
S41-S44
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Example one
The embodiment provides a radio resource allocation method, which is applied to a communication network comprising a core network of a wireless cellular communication network, a wireless access point connected to the core network, and user equipment in communication connection with the wireless access point; the wireless resource allocation method comprises the following steps:
measuring the current load condition of the wireless access point, reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving and counting the transmission requirement of user equipment when the user equipment associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network;
after receiving the connection permission control signaling fed back by the core network, screening the established associated user equipment according to the access control signaling;
and performing wireless resource allocation according to the wireless resource allocation strategy sent by the core network.
The radio resource allocation method provided by the present embodiment will be described in detail below with reference to the drawings. The radio resource allocation method described in this embodiment is applied to the application scenario shown in fig. 1, where the actual scenario is a scenario in which a fifth-Generation mobile communication technology (5th-Generation, abbreviated as 5G) and a WIreless-local area network technology (Wi-Fi) are merged. The communication network 1 as shown in fig. 1 comprises a core network 11 of a wireless cellular communication network, wireless access points communicatively connected to said core network 11 (said wireless access points comprising base stations 121, 122, 123, cellular base stations 124, and user equipments 13 (UEs) communicatively connected to said wireless access points.
Please refer to fig. 2, which is a flowchart illustrating a radio resource allocation method according to an embodiment. As shown in fig. 2, the radio resource allocation method includes the following steps:
s21, measuring the current load condition of the wireless access point, reporting the load condition of the wireless access point to the core network, receiving and counting the transmission requirement of the user equipment when the user equipment associated with the wireless access point has the pure requirement, and reporting the transmission requirement of the user equipment to the core network. In this embodiment, the transmission requirement of the ue includes parameters such as bandwidth required by the user and/or time delay. In the present embodiment, it is preferred that,
the load state of the wireless access points refers to allocating the requirement of the user equipment on wireless resources to the wireless access points, some wireless access points have a lot of allocated tasks, which is called load overload, and other wireless access points are idle, which is called light load.
And S22, after receiving the access control signaling fed back by the core network, screening the established associated user equipment according to the access control signaling. In this embodiment, the access control signaling is used to inform the wireless access point of a user equipment allowed to perform service data interaction with the wireless access point and/or a user equipment prohibited from performing service data interaction with the wireless access point. In this embodiment, the service data interaction includes service data transceiving between the wireless access point and the user equipment based on a carrier sense multiple access/collision avoidance method. The carrier sense multiple access/collision avoidance mode refers to a collision avoidance mechanism of a multi-user shared wireless channel so as to improve the network throughput performance and the delay performance.
The step of screening the user equipment with established association comprises:
performing service data interaction on the user equipment which is allowed to interact service data in the access control signaling;
and rejecting the request of service data interaction for the user equipment which forbids service data interaction in the access control signaling.
S23, performing radio resource allocation to the service quality required by the user equipment in the coverage area of the radio access point according to the radio resource allocation policy sent by the core network. In this embodiment, the radio resource allocation policy refers to performing radio resource allocation according to the radio resources of the radio access point and the service quality required by the user equipment in the coverage area of the radio access point. For example, according to the radio resources of the radio access point 121, the radio resources are allocated to the user equipments within the coverage of the radio access point 121 according to their required quality of service; according to the wireless resources of the wireless access point 122, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 122 according to their required service quality, and according to the wireless resources of the wireless access point 123, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 123 according to their required service quality.
Specifically, in the wireless access point, a transmission queue is established for each user equipment; storing the data packets in different queues according to different destination addresses of the downlink data packets; when the wireless access point obtains a transmission opportunity through a carrier sense/collision avoidance mode, extracting a data packet to be transmitted by the user equipment from a specified user queue according to a wireless resource allocation strategy issued by a core network, and transmitting the data packet to ensure the service quality of the user. Please refer to fig. 3, which shows a schematic diagram of a radio resource allocation queue. As shown in fig. 3, the wireless access point allocates n user queues according to the service quality required by the user equipment, and after the user queues are allocated, extracts the data packets to be transmitted from the user queues for transmission. The radio resource allocation comprises an absolute bandwidth allocationAnd a relative bandwidth allocation, the absolute bandwidth allocation specifying a size of the allocated bandwidth; and after the relative bandwidth is allocated to the absolute bandwidth, the residual bandwidth is allocated among the user equipment in proportion. . As shown in FIG. 3, X1Mbps，X2Mbps，…,Yn-1％，Yn. Wherein, X1Mbps，X2Mbps, … denotes absolute bandwidth, …, Yn-1％，Yn% represents relative bandwidth.
In this embodiment, the step of guaranteeing the service quality of the user includes:
and for the downlink from the wireless access point to the user equipment in the coverage range, transmitting and extracting data packets from the user queue, and adjusting the downlink data transceiving speed by controlling the data arrival acknowledgement delay for the transmission control protocol data flow or the user datagram protocol data flow of the downlink. The Transmission Control Protocol (TCP) refers to a connection-oriented, reliable, byte-stream-based transport layer communication protocol that performs the functions specified by the fourth layer transport layer in the simplified OSI model of computer networks. The User Datagram Protocol (UDP) refers to a connectionless transport layer protocol in the reference model, providing transaction-oriented simple unreliable messaging services. The control of the data arrival confirmation delay refers to a response mechanism of three-way handshake in a transmission control protocol. Wherein, the data packet extraction sequence is performed according to the radio resource allocation strategy issued by the core network.
For the uplink from the user equipment in the coverage area to the wireless access point, the wireless resource allocation of the uplink is realized through the wireless resource allocation of the downlink.
The present embodiment further provides a radio resource management method, where the radio resource management method includes:
receiving the current load state reported by the wireless access point and the transmission requirement of the user equipment which establishes association with the wireless access point;
determining user equipment capable of performing service data interaction with the wireless access point according to the load state of the wireless access point and the transmission requirement of the user equipment, and sending an access control signaling to the wireless access point corresponding to the access control signaling;
and after the connection permission access control signaling is to be sent, formulating a wireless resource allocation strategy aiming at the wireless access point, and sending the wireless resource allocation strategy to the corresponding wireless access point.
The radio resource management method provided by the present embodiment will be described in detail below with reference to the drawings. The radio resource management method is applied to a communication network 1 comprising a core network of a wireless cellular communication network, a wireless access point communicatively connected to the core network, and a user equipment communicatively connected to the wireless access point. Please refer to fig. 4, which is a flowchart illustrating a radio resource management method according to an embodiment. As shown in fig. 4, the radio resource management method includes the following steps:
s41, receiving the current load status reported by the wireless access point and the transmission requirement of the ue associated with the wireless access point.
For example, the current load states reported by the wireless access point 121(AP1), the wireless access point 122(AP2), and the wireless access point 123(AP3) are received, and the transmission requirements of the ue under the wireless access point 121(AP1), the transmission requirements of the ue under the wireless access point 122(AP2), and the transmission requirements of the ue under the wireless access point 123(AP3) are received.
S42, according to the load state of the wireless access point and the transmission demand of the user equipment, determining the user equipment capable of interacting service data with the wireless access point, and sending the access control signaling to the wireless access point corresponding to the access control signaling.
Specifically, the access control signaling corresponding to each of the wireless access point 121(AP1), the wireless access point 122(AP2), and the wireless access point 123(AP3) is transmitted.
S43, after the access control signaling is sent, a wireless resource allocation strategy for the wireless access point is formulated. The wireless resource allocation strategy of the wireless access point is to allocate wireless resources to the user equipments within the coverage of the wireless access point 121 according to their required service quality according to the wireless resources of the wireless access point 121; according to the wireless resources of the wireless access point 122, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 122 according to their required service quality, and according to the wireless resources of the wireless access point 123, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 123 according to their required service quality.
And S44, sending the wireless resource allocation strategy to the corresponding wireless access point. The radio resource allocation strategy of the radio access point refers to that the radio access point 121 performs radio resource allocation on the user equipment in the coverage area according to the service quality required by the user equipment, the radio access point 122 performs radio resource allocation on the user equipment in the coverage area according to the service quality required by the user equipment, and the radio access point 123 performs radio resource allocation on the user equipment in the coverage area according to the service quality required by the user equipment.
The present embodiment also provides a storage medium (computer-readable storage medium) having stored thereon a computer program which, when executed by a processor, implements the radio resource allocation method or implements the radio resource management method. Those of ordinary skill in the art will understand that: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. The aforementioned computer program may be stored in a computer readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The wireless resource allocation method, the wireless resource management method, and the storage medium described in this embodiment design a signaling interface between the wireless access point and the cellular network based on the CSMA/CA mechanism, which can realize the support of QoS in the wireless communication system and clear the obstacles in the heterogeneous network convergence process.
Example two
The embodiment provides a radio resource allocation system, which is applied to a communication network comprising a core network, a radio access point communicatively connected to the core network, and a user equipment communicatively connected to the radio access point; the radio resource allocation system includes:
the measuring module is used for measuring the current load condition of the wireless access point;
the statistical module is used for counting the transmission requirements of the user equipment when the user equipment which is associated with the wireless access point has the transmission requirements;
the first communication module is used for reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving the transmission requirement of the user equipment when the user equipment which is associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network;
the screening operation module is used for screening the user equipment with the established association according to the access control signaling after receiving the access control signaling fed back by the core network;
and the resource allocation module is used for allocating the wireless resources according to the wireless resource allocation strategy sent by the core network.
The radio resource allocation system provided in the present embodiment will be described in detail with reference to the drawings. It should be noted that the division of the modules of the radio resource allocation system is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the x module may be a processing element that is set up separately, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the x module may be called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Please refer to fig. 5, which is a schematic diagram illustrating an interaction principle between a radio resource allocation system and a radio resource management system in an embodiment. As shown in fig. 5, the radio resource allocation system 51 includes a measurement module 511, a first communication module 512, a statistic module 513, a screening operation module 514, and a resource allocation module 515.
The measurement module 511 is configured to measure a load condition of the wireless access point, and report the load condition of the wireless access point to the core network through the first communication module 512. In this embodiment, the load status of the wireless access points refers to allocating the requirement of the user equipment for the wireless resources to the wireless access points, some wireless access points allocate a lot of tasks, which is called as load overload, and other wireless access points are idle, which is called as light load.
The statistical module 513 is configured to receive the transmission requirement of the user equipment through the first communication module 512 when the user equipment associated with the wireless access point has a pure requirement, and count the transmission requirement of the user equipment, and the first communication module 512 reports the transmission requirement of the user equipment to the core network. In this embodiment, the transmission requirement of the ue includes parameters such as bandwidth required by the user and/or time delay. In the present embodiment, it is preferred that,
the screening operation module 514 is configured to, after the first communication module 512 receives the access control signaling fed back by the core network, perform screening operation on the user equipment with the established association according to the access control signaling. In this embodiment, the access control signaling is used to inform the wireless access point of a user equipment allowed to perform service data interaction with the wireless access point and/or a user equipment prohibited from performing service data interaction with the wireless access point. In this embodiment, the service data interaction includes service data transceiving between the wireless access point and the user equipment based on a carrier sense multiple access/collision avoidance method. The carrier sense multiple access/collision avoidance mode refers to a collision avoidance mechanism of a multi-user shared wireless channel to reduce the probability of collision as much as possible so as to improve the network throughput performance and the delay performance.
The screening operation module 514 is specifically configured to perform service data interaction on the user equipment that is allowed to interact service data in the access control signaling; and refusing to carry out service data interaction on the user equipment which forbids service data interaction in the access control signaling.
The resource allocation module 515 coupled to the screening operation module 514 is configured to perform radio resource allocation for the quality of service required by the user equipment in the coverage area of the radio access point according to the radio resource allocation policy sent by the core network. In this embodiment, the radio resource allocation policy refers to performing radio resource allocation according to the radio resources of the radio access point and the service quality required by the user equipment in the coverage area of the radio access point. For example, according to the radio resources of the radio access point 121, the radio resources are allocated to the user equipments within the coverage of the radio access point 121 according to their required quality of service; according to the wireless resources of the wireless access point 122, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 122 according to their required service quality, and according to the wireless resources of the wireless access point 123, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 123 according to their required service quality.
Specifically, the resource allocation module 515 establishes a transmission queue for each ue in the wireless access point; storing the data packets in different queues according to different destination addresses of the downlink data packets; when the wireless access point obtains the transmission opportunity through a carrier sense/collision avoidance mode, the data packet to be transmitted by the user equipment is extracted from a designated user queue according to a wireless resource allocation strategy issued by a core network and is transmitted, so that the service quality of the user is guaranteed. The wireless resource allocation comprises absolute bandwidth allocation and relative bandwidth allocation, and the absolute bandwidth allocation is the size of the bandwidth appointed to be allocated; and after the relative bandwidth is allocated to the absolute bandwidth, the residual bandwidth is allocated among the user equipment in proportion.
In this embodiment, the step of guaranteeing the service quality of the user includes: and for the downlink from the wireless access point to the user equipment in the coverage range, transmitting and extracting data packets from the user queue, and adjusting the downlink data transceiving speed by controlling the data arrival acknowledgement delay for the transmission control protocol data flow or the user datagram protocol data flow of the downlink. The Transmission Control Protocol (TCP) refers to a connection-oriented, reliable, byte-stream-based transport layer communication protocol that performs the functions specified by the fourth layer transport layer in the simplified OSI model of computer networks. The User Datagram Protocol (UDP) refers to a connectionless transport layer protocol in the reference model, providing transaction-oriented simple unreliable messaging services. The control of the data arrival confirmation delay refers to a response mechanism of three-way handshake in a transmission control protocol. Wherein, the data packet extraction sequence is performed according to the radio resource allocation strategy issued by the core network. For the uplink from the user equipment in the coverage area to the wireless access point, the wireless resource allocation of the uplink is realized through the wireless resource allocation of the downlink.
With reference to fig. 5, the present embodiment further provides a radio resource management system 52, wherein the radio resource management system 52 includes a second communication module 521, an access control module 522 and a policy making module 523.
The second communication module 521 is configured to receive the current load status reported by the wireless access point and the transmission requirement of the user equipment associated with the wireless access point. For example, the second communication module 521 receives the current load status reported by the wireless access point 121(AP1), the wireless access point 122(AP2) and the wireless access point 123(AP 3).
The access control module 522 coupled to the second communication module 521 is configured to determine, according to the load status of the wireless access point and the transmission requirement of the user equipment, the user equipment capable of performing service data interaction with the wireless access point, and instruct the second communication module 521 to send an access control signaling to the wireless access point corresponding to the access control signaling.
Specifically, the access control signaling corresponding to each of the wireless access point 121(AP1), the wireless access point 122(AP2), and the wireless access point 123(AP3) is transmitted.
After the policy making module 523 coupled to the access control module 522 sends the access control signaling, it makes a wireless resource allocation policy for the wireless access point. The wireless resource allocation strategy of the wireless access point is to allocate wireless resources to the user equipments within the coverage of the wireless access point 121 according to their required service quality according to the wireless resources of the wireless access point 121; according to the wireless resources of the wireless access point 122, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 122 according to their required service quality, and according to the wireless resources of the wireless access point 123, the wireless resources are allocated to the user equipments within the coverage of the wireless access point 123 according to their required service quality. Finally, the wireless resource allocation policy is sent to the corresponding wireless access point through the second communication module 521. The radio resource allocation strategy of the radio access point refers to that the radio access point 121 performs radio resource allocation on the user equipment in the coverage area according to the service quality required by the user equipment, the radio access point 122 performs radio resource allocation on the user equipment in the coverage area according to the service quality required by the user equipment, and the radio access point 123 performs radio resource allocation on the user equipment in the coverage area according to the service quality required by the user equipment.
EXAMPLE III
The present embodiment provides an apparatus, comprising: a processor, a memory, a transceiver, a communication interface, and a system bus; the memory is used for storing the computer program, the communication interface is used for communicating with other devices, and the processor and the transceiver are used for operating the computer program to enable the devices to execute the steps of the wireless resource allocation method in the first embodiment.
The above-mentioned system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface is used for realizing communication between the database access device and other equipment (such as a client, a read-write library and a read-only library). The memory may include a Random Access Memory (RAM), and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor may be a general-purpose processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the integrated circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components.
The present embodiment also provides a core network, where the core network executes each step of the radio resource management method in the first embodiment.
In summary, the radio resource allocation method system, the radio resource management method/system, the storage medium and the terminal of the present invention design a signaling interface between the radio access point and the cellular network based on the CSMA/CA mechanism, so as to realize the support of QoS in the radio communication system and clear the obstacles in the heterogeneous network convergence process. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (14)
1. A radio resource allocation method is applied to a communication network comprising a core network of a wireless cellular communication network, a wireless access point connected to the core network, and a user equipment communicatively connected to the wireless access point; the wireless resource allocation method comprises the following steps:
measuring the current load condition of the wireless access point, reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving and counting the transmission requirement of user equipment when the user equipment associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network;
after receiving the connection permission control signaling fed back by the core network, screening the established associated user equipment according to the access control signaling;
and performing wireless resource allocation according to the wireless resource allocation strategy sent by the core network.
2. The method of claim 1, wherein the access control signaling is used to inform the wireless access point of a user equipment with which service data interaction is allowed and/or a user equipment with which service data interaction is prohibited.
3. The method of claim 2, wherein the step of performing the screening operation on the associated ue comprises:
performing service data interaction on the user equipment which is allowed to interact service data in the access control signaling;
and rejecting the request of service data interaction for the user equipment which forbids service data interaction in the access control signaling.
4. The method according to claim 3, wherein the interaction of the traffic data comprises transceiving of the traffic data between the radio access point and the UE based on a carrier sense/collision avoidance scheme.
5. The method of claim 4, wherein the step of resource allocation for the quality of service required by the user equipment in the coverage area of the wireless access point comprises:
in a wireless access point, establishing a sending queue for each user equipment; storing the data packets in different queues according to different destination addresses of the downlink data packets; when the wireless access point obtains the transmission opportunity through a carrier sense/collision avoidance mode, the data packet to be transmitted by the user equipment is extracted from a designated user queue according to a wireless resource allocation strategy issued by a core network and is transmitted.
6. The radio resource allocation method according to claim 4,
transmitting an extracted packet from the user queue for downlink from the wireless access point to user equipment within its coverage area; wherein, the extraction sequence of the data packets is carried out according to a wireless resource allocation strategy issued by a core network so as to ensure the service quality of different user equipment;
for the uplink from the user equipment in the coverage area to the wireless access point, the wireless resource allocation of the uplink is realized through the wireless resource allocation of the downlink.
7. The method according to claim 1, wherein the transmission requirement of the ue comprises bandwidth required by the ue and/or delay.
8. The method according to claim 1, wherein the radio resource allocation comprises an absolute bandwidth allocation and a relative bandwidth allocation, the absolute bandwidth allocation specifying a size of the allocated bandwidth; and after the relative bandwidth is allocated to the absolute bandwidth, the residual bandwidth is allocated among the user equipment in proportion.
9. A radio resource management method is applied to a core network comprising a wireless cellular communication network, a wireless access point connected to the core network, and a user equipment in communication connection with the wireless access point; the radio resource management method comprises the following steps:
receiving the current load state reported by the wireless access point and the transmission requirement of the user equipment which establishes association with the wireless access point;
determining user equipment capable of performing service data interaction with the wireless access point according to the load state of the wireless access point and the transmission requirement of the user equipment, and sending an access control signaling to the wireless access point corresponding to the connection permission control signaling;
and after the access control signaling is to be sent, formulating a wireless resource allocation strategy aiming at the wireless access point, and sending the wireless resource allocation strategy to the corresponding wireless access point.
10. A wireless resource allocation system is applied to a wireless cellular communication network comprising a core network of the wireless cellular communication network, a wireless access point connected to the core network, and a user equipment in communication connection with the wireless access point; the radio resource allocation system includes:
the measuring module is used for measuring the current load condition of the wireless access point;
the statistical module is used for counting the transmission requirements of the user equipment when the user equipment which is associated with the wireless access point has the transmission requirements;
the first communication module is used for reporting the load state of the wireless access point to a core network of the wireless cellular communication network, receiving the transmission requirement of the user equipment when the user equipment which is associated with the wireless access point has the transmission requirement, and reporting the transmission requirement of the user equipment to the core network of the wireless cellular communication network;
the screening operation module is used for screening the user equipment with the established association according to the access control signaling after receiving the access control signaling fed back by the core network;
and the resource allocation module is used for allocating the wireless resources according to the wireless resource allocation strategy sent by the core network.
11. The system according to claim 10, wherein the access control signaling is used to inform the wireless access point of user equipments allowed to perform service data interaction with the wireless access point and/or user equipments prohibited from performing service data interaction with the wireless access point; the screening operation module is used for carrying out service data interaction on the user equipment which allows service data interaction in the connection allowing signaling; and rejecting the request of service data interaction of the user equipment which forbids service data interaction in the connection permission signaling.
12. A radio resource management system is applied to a wireless cellular communication network comprising a core network of the wireless cellular communication network, a wireless access point connected to the core network, and a user equipment connected with the wireless access point in communication; the radio resource management system includes:
the second communication module is used for receiving the load state reported by the wireless access point and the transmission requirement of the user equipment which establishes association with the wireless access point;
the access control module is used for determining user equipment capable of performing service data interaction with the wireless access point according to the load state of the wireless access point and the transmission requirement of the user equipment, and enabling the second communication module to send an access control signaling to the wireless access point corresponding to the connection permission control signaling;
and the strategy making module is used for making a wireless resource allocation strategy aiming at the wireless access point after the access control signaling is to be sent, and sending the wireless resource allocation strategy to the corresponding wireless access point.
13. A storage medium having stored thereon a computer program for implementing a radio resource allocation method according to any one of claims 1 to 8 or a radio resource management method according to claim 9 when executed by a processor.
14. A radio resource allocation apparatus, comprising: a processor and a memory;
the memory is configured to store a computer program, and the processor is configured to execute the computer program stored by the memory to cause the radio resource allocation apparatus to perform the radio resource allocation method according to any one of claims 1 to 8.
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